556 Report on the Bacteriology of Water. 



then anthrax spoi-es will be formed, and these, as is now well known, 

 may persist in a living and virulent condition for an almost indefinite 

 period of time for months and probably even for years. 



From these experiments it fm*ther appears that the lowest tem- 

 perature at which spore formation of anthrax in water will take 

 place lies somewhere between 15 and 19 C. According to Koch, 

 the lowest temperature at which anthrax spores are obtained is 16 C., 

 and the most advantageous temperature for the production of the 

 hardiest spores is 20 25 C. 



